<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right" class="el-breadcrumb">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item :to="{ path: '/goods' }">商品管理</el-breadcrumb-item>
      <el-breadcrumb-item :to="{ path: '/goods' }">商品列表</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
      >
      </el-alert>
      <!-- 步骤条区域 -->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- tab栏区域 -->
      <el-form
        :model="addForm"
        :rules="addRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          :tab-position="'left'"
          v-model="activeIndex"
          :before-leave="tabsChange"
          @tab-click="tabsClisked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-row>
                <el-col :span="12">
                  <el-input v-model="addForm.goods_name"></el-input>
                </el-col>
              </el-row>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-row>
                <el-col :span="12">
                  <el-input
                    v-model="addForm.goods_price"
                    type="number"
                    width="200px"
                  ></el-input>
                </el-col>
              </el-row>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-row>
                <el-col :span="12">
                  <el-input
                    v-model="addForm.goods_weight"
                    type="number"
                  ></el-input>
                </el-col>
              </el-row>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-row>
                <el-col :span="12">
                  <el-input
                    v-model="addForm.goods_number"
                    type="number"
                  ></el-input>
                </el-col>
              </el-row>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-row>
                <el-col :span="5">
                  <div class="block">
                    <el-cascader
                      v-model="addForm.goods_cat"
                      :options="cateList"
                      :props="cateProps"
                      @change="addHandleChange"
                    ></el-cascader>
                  </div>
                </el-col>
              </el-row>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              v-for="item in manyTabData"
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <!-- 复选框组 -->
              <template>
                <el-checkbox-group v-model="item.attr_vals">
                  <el-checkbox
                    v-for="(cb, i) in item.attr_vals"
                    :key="i"
                    :label="cb"
                    border
                  ></el-checkbox>
                </el-checkbox-group>
              </template>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              v-for="item in onlyTabData"
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              :action="uploadUrl"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headersObj"
              :on-success="handSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- 富文本编辑器 -->
            <quill-editor
              ref="myQuillEditorRef"
              v-model="addForm.goods_introduce"
            />
            <el-button type="primary" class="addGoodsBtn" @click="addGoods"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <!-- 图片预览的对话框 -->
    <el-dialog
      class="ptohtDialog"
      title="图片预览"
      :visible.sync="photoDialogVisible"
      width="50%"
      height="50%"
    >
      <img :src="photoPath" />
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      activeIndex: '0',
      // 添加商品表单的数据对象
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        // 商品所属的分类数组
        goods_cat: [],
        // 图片的数组
        pics: [],
        // 商品的详情描述
        goods_introduce: '',
        attrs: []
      },
      addRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' }
        ]
      },
      cateList: [],
      cateProps: {
        value: 'cat_id',
        label: 'cat_name',
        children: 'children',
        expandTrigger: 'hover'
        // checkStrictly: true
      },
      // 动态参数列表数据
      manyTabData: [],
      // 静态属性列表数据
      onlyTabData: [],
      // 上传图片的url地址
      uploadUrl: 'http://127.0.0.1:8888/api/private/v1/upload',
      // 图片上传的headers请求头对象
      headersObj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      // 预览图片的地址
      photoPath: '',
      photoDialogVisible: false
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('获取分类列表数据失败')
      }
      this.cateList = res.data
    },
    // 级联选择器选项变化会触发这个函数
    addHandleChange() {
      console.log(this.addForm.goods_cat)
    },
    // tbs标签页切换前的钩子函数
    tabsChange(activeNmae, oldActiveName) {
      // console.log('即将离开的标签页的名字', oldActiveName)
      // console.log('即将进入的标签页的名字', activeNmae)
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请选择商品分类')
        return false
      }
    },
    // 切换到商品参数tabs页面是获取商品属性数据
    async tabsClisked() {
      // console.log(typeof this.activeIndex)
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'many' }
          }
        )
        console.log(res)
        if (res.meta.status !== 200) {
          return this.$message.error('获取动态参数列表失败')
        }
        res.data.forEach(item => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })
        this.manyTabData = res.data
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'only' }
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('获取静态属性失败')
        }
        this.onlyTabData = res.data
        console.log(res.data)
      }
    },
    // 处理预览图片的事件
    handlePreview(file) {
      console.log(file)
      this.photoPath = file.response.data.url
      this.photoDialogVisible = true
    },
    // 处理删除图片的事件
    handleRemove(file) {
      console.log(file)
      // 1.获取将要删除的图片临时路径
      const filePath = file.response.data.tmp_path
      // 2.从pics数组中找到，找到这个图片对应的索引值
      const i = this.addForm.pics.findIndex(x => {
        return x.pic === filePath
      })
      // 3.调用数组的splice方法，把图片信息对象从pics数组中移除
      this.addForm.pics.splice(i, 1)
      console.log(this.addForm)
    },
    // 图片上传成功的事件
    handSuccess(response) {
      console.log(response)
      // 1.拼接得到一个图片信息对象
      const picInfo = { pic: response.data.tmp_path }
      // 2.将图片信息push到addFirm.pic数组中
      this.addForm.pics.push(picInfo)
      console.log(this.addForm)
    },
    // 点击添加商品
    addGoods() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error('请填写必要的选项')
        }
        // 使用json对象深拷贝this.addForm
        //  const newAddForm = JSON.parse(JSON.stringify(newAddForm))

        // 使用方法进行深拷贝
        // const newAddForm = this.deepClone(this.addForm)

        // 使用loadsh进行深拷贝
        const newAddForm = this._.cloneDeep(this.addForm)
        newAddForm.goods_cat = this.addForm.goods_cat.join(',')
        // 处理动态参数
        console.log('动态参数this', this.manyTabData)
        this.manyTabData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' ')
          }
          this.addForm.attrs.push(newInfo)
        })
        // 处理静态属性
        console.log('静态属性', this.onlyTabData)
        this.onlyTabData.forEach(item => {
          const onlyNewInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals
          }
          this.addForm.attrs.push(onlyNewInfo)
        })
        newAddForm.attrs = this.addForm.attrs
        console.log(this.addForm)
        console.log(newAddForm)
        const { data: res } = await this.$http.post('goods', newAddForm)
        console.log('添加成功的响应', res)
        if (res.meta.status !== 201) {
          return this.$message.error(res.meta.msg)
        }
        this.$message.success('添加商品成功')
        this.$router.push('/goods')
      })
    },
    // 深拷贝方法
    deepClone(obj) {
      if (typeof obj !== 'object' || obj === null) {
        return obj
      }
      var result
      if (obj instanceof Array) {
        result = []
      } else {
        result = {}
      }
      for (var key in obj) {
        result[key] = this.deepClone(obj[key])
      }
      return result
    }
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>

<style scoped>
.el-steps {
  justify-content: center;
}
.el-input__inner {
  width: 40% !important;
}
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
.addGoodsBtn {
  margin-top: 10px;
}
</style>
